exam Maths Puzzle Numerical Ability

We have had to turn in our books already. I am working on a study guide for a final exam. I can not remember how to find the inverse of y = log base 7 to x.

Thank you

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exam Other Question

The total receipts for 900 tickets were 95000. If students paid 75php per ticket, and non-students paid 125php per ticket, how many student-tickets were sold? Explain how the graph of y-5=(x-3)^2 can be obtained from the graph of y=x^2. My answer is, Shift the graph of y=x^2 left 3 units and up 5 units. Is that right. Thanks again for helping.